The Convergence of Quality and Agility

The primary benefit of localization promoted by Leax lies in ensuring that Brazilian OEMs and large fleet operators have access to transmission components, such as propeller shafts, with the same durability, precision, and reliability required in the most demanding European markets.

This standard is guaranteed through:

• Soft and Hard CNC Machining: Dimensional precision and surface finish are controlled to microns using state-of-the-art Computer Numerical Control (CNC) Machining Centers. This technology is crucial for reducing vibrations and extending component service life—essential factors for vehicles operating under extreme loads and long journeys.
• Controlled Heat Treatment: The heat treatment process is vital for imparting the necessary hardness and strength to the steel against wear and fatigue. At Leax, this process follows international protocols, ensuring the material’s microstructure withstands the nominal torque of heavy vehicles, agricultural machinery, and construction equipment.
• In-Line Process Management: Leax do Brasil applies In-Line Process Management philosophy, which optimizes workflow, minimizes waste, and ensures full traceability of each part. This rigor in management is a pillar of European quality and translates into superior final product performance.

Strategic Advantages for the Brazilian Market

Choosing Leax do Brasil represents a strategic decision that directly impacts the financial and operational health of companies:

By opting for Strategic Localization with Leax do Brasil, companies not only invest in a high-quality component but also strengthen their supply chain, ensuring operational continuity and maximum fleet productivity. It is the security of local production combined with the excellence of global engineering.
For more information on how Leax do Brasil can assist in localizing your production line and supplying propeller shafts with European standards, contact our specialist team.

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The Role of Flexible Connections in Heavy Vehicles

Flexible connections are designed to handle the rigors of heavy vehicle operations, where constant movement, high loads, and uneven terrain test each component. The propeller shaft, for instance, connects the engine to the differential or coupled systems, allowing rotations of up to 45 degrees with minimal torque loss under optimized conditions. Universal joints, located at the shaft’s ends, act as articulations that absorb misalignments, while bearings reduce friction, ensuring smooth transmission. Universal joints complement the system, adapting to directional changes and maintaining structural integrity under intense pressures.

At Leax do Brasil, these components undergo advanced CNC machining with stringent dimensional control, ensuring millimeter tolerances and smooth, fatigue-resistant surfaces. In 2025, with growing demand for heavy vehicles—especially in Brazil’s mining and road transport sectors—the precision of these connections becomes increasingly critical. Data from the National Association of Motor Vehicle Manufacturers (Anfavea) show that truck production in Brazil rose by 40.5% in 2024 compared to 2023, reaching 141,252 units, and sales/licensing increased by 15.7% to 124,933 units, highlighting the need for durable components that withstand long journeys and loads up to 40 tons.

Reduction of Friction and Efficiency Improvement

One of the primary benefits of flexible connections is friction reduction, a factor that can compromise performance and accelerate wear in heavy vehicles. Leax’s high-precision bearings operate reliably across temperatures from -20°C to 120°C, ensuring performance even in Brazil’s challenging climates. The flexibility of universal joints distributes forces evenly, minimizing vibrations that could affect the cab or engine integrity. Optimized universal joint systems enhance operator comfort and stability on rough roads. For manufacturers, this means vehicles requiring fewer adjustments over their lifespan, while operators benefit from up to 15% more uptime, according to SAE International.

Simplified Maintenance and Cost Reduction

Maintaining heavy vehicles poses significant logistical and financial challenges. Leax’s flexible connections simplify this process with a modular design, allowing individual replacement of universal joints or universal joints without replacing the entire propeller shaft. Compliance with international standards ensures seamless integration into various fleets. In response to rising safety regulations in Brazil, Leax invests in operator training, promoting proper usage and efficient maintenance of components.

Resistance in Extreme Conditions

Heavy vehicles operate in harsh environments that demand maximum component resilience. Poorly designed propeller shafts can fail under heavy loads or uneven terrain, causing costly downtime. To overcome these challenges, Leax employs high-strength materials and rigorous manufacturing processes, ensuring durability and reliable performance even in the most adverse conditions.

Integration with Technology and Trends

The automotive industry is constantly evolving, incorporating technologies that enhance the benefits of flexible connections. At Leax, we follow sector trends and invest in advanced CNC machining with more durable cutting tools that double machine lifespan. This boosts our production capacity, delivering even more precise components while keeping costs competitive. The combination of technological advancements and continuous manual inspections maximizes operational efficiency and system reliability in heavy vehicles.

Connections that Elevate Performance

Flexible connections, such as propeller shafts and their components, are the foundation for optimizing heavy vehicle performance. Leax do Brasil combines technical expertise, robust materials, and innovation to deliver solutions that reduce friction, simplify maintenance, and withstand extreme conditions. For manufacturers and operators, investing in these connections means greater productivity and reliability on roads and fields. In 2025, Leax remains at the forefront, ready to turn projects into solutions that drive the future of heavy mobility.

Read some of our articles:
Team Training: Ensuring Quality in Automotive Components
Efficient Supply Chain: The Power of Outsourcing with Leax

Questions? Make Contact: info.leaxdobrasil@leax.com

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The Importance of Balancing
Balancing adjusts the mass distribution of the propeller shaft to eliminate vibrations during rotation. An unbalanced shaft generates centrifugal forces, causing tremors, noise, accelerated wear, and even critical failures. These issues impact:

• Comfort: Perceptible vibrations affect the operator’s experience.
• Durability: Premature wear of crosses, bearings, and flanges increases maintenance costs.
• Efficiency: Imbalance raises fuel consumption, impacting sustainability.
• Safety: Shaft failures can cause accidents, particularly in heavy vehicles.

The Balancing Process
Balancing must adhere to international standards, with rigorous steps:

• Initial Inspection: Checking for play, wear, or damage in tubes, crosses, and flanges. Defective parts are replaced to ensure accuracy.
• Imbalance Measurement: Machines like the 97VK1000 detect imbalances with high precision, measuring vibrations in simulated rotations.
• Correction: Counterweights are added or removed via welding or machining to adjust the shaft’s mass.
• Final Testing: The shaft is tested at various speeds to confirm vibration-free operation.

Challenges and Solutions
Propeller shafts face challenges requiring precise balancing:

• Natural Wear: Crosses and bearings wear out, especially in off-road operations. Leax uses durable materials and dynamic balancing to minimize this issue.
• Improper Installation: Misaligned flanges cause vibrations. Leax employs yoke flanges and precise couplings for perfect alignment.
• Overloading and Lack of Lubrication: Improper use or insufficient maintenance leads to play. Leax recommends regular inspections and proper lubrication.
• Tube Warping: Deformations require straightening and rebalancing, performed with advanced equipment.

Leax’s Innovations
Leax Brazil leads innovation in propeller shafts, integrating:

• Automation: Advanced control systems enhance precision in machining, reducing human error.
• Localization: Local production of shafts and crosses strengthens Brazilian industry and reduces logistics costs.
• Electric Vehicle Adaptation: Optimized propeller shafts for electric vehicles, with higher energy efficiency, meeting 2025 trends.

Applications of Our Propeller Shafts
Leax’s propeller shafts are used in:

• Heavy Vehicles: Trucks and buses, where efficiency lowers operational costs.
• Agriculture: Tractors and harvesters, requiring robustness in rough terrain.
• Mining and Construction: Equipment under extreme loads, benefiting from durability.
• General Industry: Transmission systems in industrial machinery, where precision is critical.

Balancing propeller shafts is essential for industrial efficiency, safety, and sustainability. At Leax Brazil, this process is elevated to a standard of excellence, with cutting-edge technology, sustainable materials, and certifications like the Clima Paraná Seal and I-REC. Whether for heavy vehicles, agricultural machinery, or mining equipment, Leax delivers integrated solutions from design to after-sales.

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Questions? Make Contact: info.leaxdobrasil@leax.com

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So, how does the transmission system actually work? It begins with the clutch, a key feature in manual vehicles, acting as a switch between the engine and the transmission. When the driver presses the pedal, it temporarily disconnects the engine’s power, allowing smooth gear shifts that adapt the vehicle to varying driving conditions. In automatic models, this role is taken by the torque converter, a fluid-based device that transmits power seamlessly, eliminating manual input and providing a smoother driving experience.

Next comes the gearbox, the brain of the system. It manages the balance between torque and speed, shifting gears to give the vehicle the strength to climb hills or the velocity for highway cruising. Whether it’s a manual gearbox, controlled by the driver’s gear selection, or an automatic one, guided by advanced sensors and electronics, the precision of each gear is critical to prevent wear and maintain efficiency. At Leax, our gearboxes are crafted with minimal tolerances, using CNC machining and heat treatments to enhance component durability.

The propeller shaft then steps in, carrying power from the gearbox to the differential or directly to the wheels, particularly in rear-wheel or all-wheel-drive vehicles. Made up of a sturdy tube, articulated universal joints, and connecting flanges, it endures vibrations and misalignments without sacrificing energy transfer. Leax do Brasil produces propeller shafts with dynamic balancing and high-quality materials, ensuring every rotation is smooth and reliable, even under tough conditions.

Finally, the differential completes the system, smartly distributing power between the wheels. In a turn, for instance, it allows the outer wheel to spin faster than the inner one, maintaining stability and grip. This component demands high-precision parts, like bevel gears and bearings, to function flawlessly. At Leax, every differential is built to exacting standards, embodying our dedication to excellence.

The value of high-precision parts extends beyond basic operation: they minimize wear, extend vehicle lifespan, and optimize fuel efficiency. A poorly designed transmission system or low-quality components can lead to mechanical failures, unwanted noise, or unexpected breakdowns. With over a decade in the Brazilian market and the backing of the Sweden-based Leax Group, Leax do Brasil delivers tailored solutions for automakers and the aftermarket alike. In 2025, we continue to innovate, embracing sustainable practices and advanced technologies to provide not just parts, but trust in motion.

Any questions? Make Contact: nfo.leaxdobrasil@leax.com

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At our booth, we will present our propeller shaft, a vital component in the heavy-duty vehicle industry. Engineered with cutting-edge technology, Leax’s propeller shaft not only offers robustness and reliability but also significantly enhances energy efficiency. This component can reduce fuel consumption and emissions by up to 80%, promoting more sustainable and responsible transportation.

During IAA Transportation, we will demonstrate how our propeller shaft optimizes energy distribution, enabling vehicles to operate more efficiently. We believe that technological innovation must go hand-in-hand with environmental responsibility, which is why our team is dedicated to developing solutions that meet market needs while protecting our planet.

Leax do Brasil takes pride in receiving various qualification seals that attest to our commitment to environmental sustainability. Notable among them are the Paraná Climate Seal A, ISO 14001 certification, the ESG in Focus Seal, and the I-Rec seal. These recognitions reaffirm our dedication to sustainable practices and reducing the environmental impact of our operations.

We invite you to visit us at IAA Transportation and discover how Leax do Brasil is leading the transformation in transportation by combining innovation, efficiency, and sustainability.

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The propeller shaft is a component composed of two tubular shafts, whose function is to transfer the engine power to the wheels, moving the vehicle. In many cases, several propeller shafts are used to drive the vehicle. But have you ever wondered how these components are manufactured?

In this article, we will explain in detail and technically the manufacturing process of the propeller shaft. We will better understand the functioning of its components and the importance of a quality supplier.

The propeller shaft is a set of components normally used in automotive applications to connect the vehicle’s transmission to the axles, transmitting the driving force to the wheels and moving the vehicle.

It consists of up to seven main components:

• Sockets: These are cylindrical tubes that make up the two shafts of the propeller shaft. They are responsible for transmitting the engine power to the vehicle’s wheels.

• Universal Joints: Also known as universal joints, the universal joints are crucial components of the propeller shaft. They are positioned at the ends of the tubes and allow the transmission of energy, even at different angles.

• Front and Rear End Caps: These are the ends of the propeller shaft tubes. They connect to the mechanical components of the vehicle, such as the transmission and differential.

• Bearings and Bearings: These are support devices that help keep the propeller shafts aligned and reduce friction during power transmission.

• Cross Flanges: These are metal pieces that connect to the universal joints and provide an interface for attachment to the vehicle’s mechanical axles.

• Coupling Flanges: These are fastening devices that connect the propeller shaft to other mechanical components of the vehicle, such as the differential and transmission.

• Yoke Terminals: These are U-shaped metal pieces that connect to the ends of the propeller shaft tubes. They provide an interface for connection to the vehicle’s mechanical components, such as the wheels and differential.

Basically, the propeller shaft is formed by two tubular shafts, one primary aligned with the power source and one secondary centered on the traction axis. The universal joints are positioned at the universal joint connections of the shafts, transmitting the driving force even at different angles. The universal joint plays a fundamental role in the production of the propeller shaft, allowing the two shafts to connect through forks that fit into the universal joint, enabling rotary motion and energy transmission.

The production of the propeller shaft can be standardized, following predefined dimensions, or customized according to the specific needs of the customer. In both cases, it is essential to follow the project specifications to ensure the efficiency and safety of the components.

The propeller shaft is widely used in vehicles with rear-wheel drive, motorcycles, agricultural machinery, and in the industry in general. Ensuring efficiency in the production of these components is essential for the proper functioning and durability of the systems in which they are applied.

Leax do Brasil, part of the renowned Leax group, stands out as one of the main suppliers of parts and production processes for assembly lines of light and heavy vehicles worldwide. Our commitment is to assist large companies in nationalizing their production lines, offering efficient and high-quality solutions. With highly efficient and standardized processes, such as propeller shaft manufacturing, gear cutting, assemblies, and heat treatment, our production line stands out for its speed, continuous process improvement, and cost reduction. With our own structure, we guarantee the same quality standard recognized by companies in Europe. Trust Leax do Brasil to provide reliable and efficient solutions for your power transmission needs.

The propeller shaft is widely used in vehicles with rear-wheel drive, motorcycles, agricultural machinery, and in the industry in general. Ensuring efficiency in the production of these components is essential for the proper functioning and durability of the systems in which they are applied.

Leax do Brasil, part of the renowned Leax group, stands out as one of the main suppliers of parts and production processes for assembly lines of light and heavy vehicles worldwide. Our commitment is to assist large companies in nationalizing their production lines, offering efficient and high-quality solutions. With highly efficient and standardized processes, such as propeller shaft manufacturing, gear cutting, assemblies, and heat treatment, our production line stands out for its speed, continuous process improvement, and cost reduction. With our own structure, we guarantee the same quality standard recognized by companies in Europe. Trust Leax do Brasil to provide reliable and efficient solutions for your power transmission needs.”

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